Leak Detection in Delaware
Leak Detection across Delaware: the 96 ZIP codes and 57 cities we route calls in, and who licenses plumbers in the state.

Free to homeowners in Delaware — the contractor pays us for the introduction, you never do.
Where we listen
Our leak detection coverage in Delaware runs to 96 ZIP codes in 57 cities. Where covered places are small and the service runs are short, a leak that does not show at a fixture is usually within a few meters of the house — under a slab, a porch or a drive — and the meter test that finds it takes minutes rather than a day.
Source: coverage area as published by our call partner; place and county names from the US Census Bureau.
We route leak detection calls in 96 ZIP codes across 57 Delaware cities, in 3 counties.
What this site is
AcousticLeak is a referral service, not a contractor. We connect homeowners with independent contractors. Contractors are required to hold whatever credential their state or municipality demands. We carry out no work and no leak location, we do not set prices, and we never charge homeowners anything — the contractors in our network pay us when we route them a call. Nothing here is a statement about what your own utility will credit; only your utility can tell you that.Checking a credential in Delaware
Delaware licenses are issued by the Delaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners, which publishes a public search you can use before work begins.
Every Delaware county we cover
- Kent County 20 ZIP codes
Dover, Camden Wyoming, Cheswold, Clayton, Dover AFB, Felton, Frederica, Harrington, Hartly and 7 more - New Castle County 51 ZIP codes
Wilmington, Newark, New Castle, Bear, Claymont, Delaware City, Hockessin, Middletown, Montchanin and 7 more - Sussex County 22 ZIP codes
Bethany Beach, Bethel, Bridgeville, Dagsboro, Delmar, Ellendale, Fenwick Island, Frankford, Georgetown and 13 more
What that coverage looks like
Wilmington alone accounts for 25 of the state's 96 covered ZIP codes, and New Castle County for 51. Dense coverage like that is where a leak call is answered quickest; the 3 counties behind it are where the drive time starts to matter, and where locating the leak precisely before anyone is dispatched saves the most.
How a leak detection job goes
A leak you cannot see is found with sound and with pressure, not by digging until something turns up. The meter is isolated and watched, the run is listened along, and the point is marked before any surface is opened. What that is worth is simple arithmetic: the cost of locating is fixed, and the cost of opening the wrong three meters of concrete is not.
What the call asks about leak detection
- Whether the meter moves with every tap in the house shut off — that one test separates a leak from a fitting.
- Where the water is showing, if it is showing at all: a ceiling, a wall, a warm patch on a floor, or only the bill.
- Whether the house is on a slab, a crawl space or a basement, because that decides how the run is reached.
Every Delaware city we route in
20 cities, ordered by size. Dense building stock is where a leak on one service line is hardest to hear and slowest to surface. Each page carries that city’s own numbers and the ZIP codes we route there.
- Wilmington 21%
- Harrington 15%
- Laurel 10%
- Greenwood 10%
- Milford 10%
- Seaford 8%
- Smyrna 8%
- Claymont 8%
- Camden Wyoming 7%
- Georgetown 7%
- New Castle 7%
- Bridgeville 6%
- Clayton 6%
- Felton 6%
- Dover 5%
- Hockessin 5%
- Milton 5%
- Rehoboth Beach 4%
- Lewes 3%
- Magnolia 3%
Before you call
A leak is located before anything is dug. What that costs and what it does not, and the questions to ask before the work is booked, are on the pages above.

